Re: random(4) changes

From	"George Spelvin" <linux@horizon.com>
Newsgroups	linux.kernel
Subject	Re: random(4) changes
Date	2016-04-27 20:10 +0200
Message-ID	<rsC4q-5HB-13@gated-at.bofh.it> (permalink)
References	<rslwD-g8-27@gated-at.bofh.it>
Organization	linux.* mail to news gateway

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Andi Kleen wrote:
> There is also the third problem of horrible scalability of /dev/random
> output on larger systems, for which patches are getting ignored.

I came up with some very pretty code to fix this, which
tried to copy_to_user with a lock held.

After all my attempts to fix that fatal flaw resulted in much uglier
code I set it aside for a while in the hopes that inspiration would
strike.

and it's still sitting unfinished.  :-(

But I want to finish it, honest!  This latest discussion has
made me acutely conscious of it.

The fact that the scope of changes just got bigger doesn't help of
course, but I *have* picked it up again.

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Re: random(4) changes "George Spelvin" <linux@horizon.com> - 2016-04-26 22:50 +0200
  Re: random(4) changes Stephan Mueller <smueller@chronox.de> - 2016-04-26 23:10 +0200
    Re: random(4) changes "George Spelvin" <linux@horizon.com> - 2016-04-27 02:30 +0200
      Re: random(4) changes "George Spelvin" <linux@horizon.com> - 2016-04-27 20:10 +0200

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